diff --git a/src/auth/index.js b/src/auth/index.js
index 9ff9474..1a6a8e9 100644
--- a/src/auth/index.js
+++ b/src/auth/index.js
@@ -151,6 +151,15 @@ export const SetupAxiosInterceptors = () => {
         async (error) => {
             // const { config, response: { status } } = error
             const status = error.response?.status
+            const reqUrl = error.config?.url || ''
+            // iAM Smart registration: HKID already linked — caller must show /iamsmart/pleaseLogin (not refresh/logout)
+            if (
+                status === 401 &&
+                reqUrl.includes('/smart/getProfile') &&
+                error.response?.data?.exception === 'msg: account created'
+            ) {
+                return Promise.reject(error)
+            }
             if (status === 401 && error.config?.url !== apiPath + REFRESH_TOKEN) {
                 // Make a request to refresh the access token
                 const refreshToken = localStorage.getItem('refreshToken');
diff --git a/src/pages/iAmSmart/RegistryCallback/index.js b/src/pages/iAmSmart/RegistryCallback/index.js
index 6d9f279..0f91a86 100644
--- a/src/pages/iAmSmart/RegistryCallback/index.js
+++ b/src/pages/iAmSmart/RegistryCallback/index.js
@@ -19,6 +19,12 @@ const Index = () => {
         getPrfile();
     }, []);
 
+    function isIAmSmartAccountAlreadyRegistered(error) {
+        const ex = error?.response?.data?.exception
+        const httpStatus = error?.response?.status
+        return httpStatus === 409 || ex === 'msg: account created'
+    }
+
     function getPrfile(){
         
         let params = new URLSearchParams(window.location.search)
@@ -38,9 +44,9 @@ const Index = () => {
                 },
                 onError:(error)=>{
                     console.log(error);
-                    if(error?.response?.data?.exception == "msg: account created"){
-                        navigate("/iamsmart/pleaseLogin", { state: {registryMethod:"iAmSmart"}} );
-                    }else{
+                    if (isIAmSmartAccountAlreadyRegistered(error)) {
+                        navigate("/iamsmart/pleaseLogin", { state: { registryMethod: "iAmSmart" } });
+                    } else {
                         window.location.assign("/register");
                     }
                 }
diff --git a/src/translations/en.json b/src/translations/en.json
index c9851b0..6f14a44 100644
--- a/src/translations/en.json
+++ b/src/translations/en.json
@@ -185,9 +185,9 @@
   "loginErrorMessage6":"User account not found",
   "loginErrorMessage7":"System is under maintenance, please check back later.",
 
-  "pleaseLloginMessage1":"User account already created",
-  "pleaseLloginMessage2":"You are our existing user, please login to your account.",
-  "pleaseLloginMessage3":"Go to Login page",
+  "pleaseLloginMessage1":"Account already registered",
+  "pleaseLloginMessage2":"The identity you verified with iAM Smart is already linked to an existing PNSPS account. Please go to the login page and sign in—there is no need to register again.",
+  "pleaseLloginMessage3":"Go to login page",
 
   "loginSuccessMessage1":"User account link up success",
   "loginSuccessMessage2":"You are our existing user and successfully linked your existing account.<br/>From now on, you can log in through \"iAM Smart\".",
diff --git a/src/translations/zh-CN.json b/src/translations/zh-CN.json
index c7ed11e..b834b09 100644
--- a/src/translations/zh-CN.json
+++ b/src/translations/zh-CN.json
@@ -221,9 +221,9 @@
   "loginErrorMessage6":"找不到用户帐户",
   "loginErrorMessage7":"系统正在维护中，请稍后再查看",
     
-  "pleaseLloginMessage1":"帐户已建立",
-  "pleaseLloginMessage2":"你是我们的现有用户，请登入你的帐户。",
-  "pleaseLloginMessage3":"前往登入页面",
+  "pleaseLloginMessage1":"账户已注册",
+  "pleaseLloginMessage2":"您通过「智方便」核实的身份已用于注册本系统账户。请前往登录页面登录，无需重新开户。",
+  "pleaseLloginMessage3":"前往登录页面",
 
   "loginSuccessMessage1":"成功连结现有帐户",
   "loginSuccessMessage2":"你是我们的现有客户，已成功连结现有帐户。<br/>以后可以透过「智方便」登入。",
diff --git a/src/translations/zh-HK.json b/src/translations/zh-HK.json
index 5bb2472..0be353a 100644
--- a/src/translations/zh-HK.json
+++ b/src/translations/zh-HK.json
@@ -222,8 +222,8 @@
   "loginErrorMessage6":"找不到用戶帳戶",
   "loginErrorMessage7":"系統正在維護中，請稍後再查看",
 
-  "pleaseLloginMessage1":"帳戶已建立",
-  "pleaseLloginMessage2":"你是我們的現有用戶，請登入你的帳戶。",
+  "pleaseLloginMessage1":"帳戶已註冊",
+  "pleaseLloginMessage2":"你透過「智方便」核實的身分已用於註冊本系統帳戶。請前往登入頁面登入，無須重新開戶。",
   "pleaseLloginMessage3":"前往登入頁面",
 
   "loginSuccessMessage1":"成功連結現有帳戶",